Structure 1583B0000000 · Yakima County, WA

I-82 over Naches River

Carries I-82 over Naches River, 0.5 E Jct SR 823.

Overall conditionFair

Set by its lowest-rated component: Superstructure at 5 of 9.

How ratings work
Deck6/9 · Satisfactory
Superstructuresets the rating5/9 · Fair
Substructure7/9 · Good
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT276 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 5/9 · sets the ratingSubstructure 7/9

276 ft end to end: about 4 semi-trucks nose to tail. Lengths and the semi-truck on the deck are drawn to the same scale. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a through truss.

Built193294 years old
Length275.9 ft84.1 m
Daily traffic24,488counted 2023
Last inspectedJune 2023every 24 months

Location

StateWashington
CountyYakima
Location0.5 E Jct SR 823
CarriesI-82
CrossesNaches River
Coordinates46.63036, -120.51561

Physical Characteristics

MaterialSteel
DesignTruss - Thru
Total Length275.9 ft (84.1 m)
Max Span180.1 ft (54.9 m)
Deck Width38.1 ft (11.6 m)
Deck Area975.6 sq m
Main Spans1
Year Built1932

Traffic

Avg Daily Traffic24,488 (2023)
Truck Traffic12%
Lanes On Bridge3

Inspection & Ownership

Last InspectionJune 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical3 — Scour critical
Structure Number0001583B0000000

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.

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